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Finding the Fourth Proportional to 18,907.56, 28,377.36 and 13,068

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Solution

The fourth proportional to 18,907.56, 28,377.36 and 13,068 is: 19,613.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.56 : 28,377.36 = 13,068 : x
  2. Step 2: Convert to fraction form
    18,907.56/28,377.36 = 13,068/x
  3. Step 3: Cross multiply
    18,907.56x = 28,377.36 × 13,068
  4. Step 4: Simplify right side
    18,907.56x = 370,835,340.48
  5. Step 5: Solve for x
    x = 370,835,340.48/18,907.56
  6. Step 6: Final answer
    x = 19,613.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.